diff --git a/index.d.ts b/index.d.ts
index b63ecdd..e1fde3c 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -108,6 +108,14 @@ declare module 'prismarine-auth' {
     refreshAfter: string
   }
 
+  export interface ProxyOptions {
+    host: string
+    port: number
+    username?: string
+    password?: string
+    type?: string
+  }
+
   export interface MicrosoftAuthFlowOptions {
     // If using Azure auth, specify an custom object to pass to MSAL
     msalConfig?: object
@@ -118,6 +126,8 @@ declare module 'prismarine-auth' {
     flow: 'live' | 'msal' | 'sisu'
     // Reset the cache and obtain fresh tokens for everything
     forceRefresh?: boolean
+    // Proxy configuration
+    proxy?: ProxyOptions
   }
 
   export enum Titles {
diff --git a/package.json b/package.json
index b288dfe..dfabf00 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,9 @@
     "@azure/msal-node": "^2.0.2",
     "@xboxreplay/xboxlive-auth": "^3.3.3",
     "debug": "^4.3.3",
+    "fetch-socks": "^1.3.0",
     "smart-buffer": "^4.1.0",
+    "undici": "^6.0.0",
     "uuid-1345": "^1.0.2"
   }
 }
diff --git a/src/MicrosoftAuthFlow.js b/src/MicrosoftAuthFlow.js
index ecdb87b..c0475a8 100644
--- a/src/MicrosoftAuthFlow.js
+++ b/src/MicrosoftAuthFlow.js
@@ -2,6 +2,8 @@ const fs = require('fs')
 const path = require('path')
 const crypto = require('crypto')
 const debug = require('debug')('prismarine-auth')
+const { socksDispatcher } = require('fetch-socks')
+const { ProxyAgent } = require('undici')
 
 const Titles = require('./common/Titles')
 const { createHash } = require('./common/Util')
@@ -16,6 +18,23 @@ const BedrockTokenManager = require('./TokenManagers/MinecraftBedrockTokenManage
 const PlayfabTokenManager = require('./TokenManagers/PlayfabTokenManager')
 const MinecraftServicesTokenManager = require('./TokenManagers/MinecraftBedrockServicesManager')
 
+function createProxyFetch (proxy) {
+  if (proxy.type === 'socks5') {
+    return (url, options = {}) => fetch(url, {
+      ...options,
+      dispatcher: socksDispatcher({
+        type: 5,
+        host: proxy.host,
+        port: proxy.port,
+        userId: proxy.username,
+        password: proxy.password
+      })
+    })
+  }
+  // otherwise use http proxy undici
+  return (url, options = {}) => fetch(url, { ...options, dispatcher: new ProxyAgent(`http://${proxy.username}:${proxy.password}@${proxy.host}:${proxy.port}`) })
+}
+
 async function retry (methodFn, beforeRetry, times) {
   while (times--) {
     if (times !== 0) {
@@ -37,6 +56,7 @@ class MicrosoftAuthFlow {
       throw new Error("Missing 'flow' argument in options. See docs for more information.")
     }
     this.options = options || { flow: 'live', authTitle: Titles.MinecraftNintendoSwitch }
+    this.fetch = this.options.proxy ? createProxyFetch(this.options.proxy) : fetch
     this.initTokenManagers(username, cache, options?.forceRefresh)
     this.codeCallback = codeCallback
   }
@@ -71,7 +91,7 @@ class MicrosoftAuthFlow {
 
     if (this.options.flow === 'live' || this.options.flow === 'sisu') {
       if (!this.options.authTitle) throw new Error(`Please specify an "authTitle" in Authflow constructor when using ${this.options.flow} flow`)
-      this.msa = new LiveTokenManager(this.options.authTitle, ['service::user.auth.xboxlive.com::MBI_SSL'], cache({ cacheName: this.options.flow, username }))
+      this.msa = new LiveTokenManager(this.options.authTitle, ['service::user.auth.xboxlive.com::MBI_SSL'], cache({ cacheName: this.options.flow, username }), this.fetch)
       this.doTitleAuth = true
     } else if (this.options.flow === 'msal') {
       let config = this.options.msalConfig
@@ -86,11 +106,11 @@ class MicrosoftAuthFlow {
     }
 
     const keyPair = crypto.generateKeyPairSync('ec', { namedCurve: 'P-256' })
-    this.xbl = new XboxTokenManager(keyPair, cache({ cacheName: 'xbl', username }))
-    this.mba = new BedrockTokenManager(cache({ cacheName: 'bed', username }))
-    this.mca = new JavaTokenManager(cache({ cacheName: 'mca', username }))
-    this.mcs = new MinecraftServicesTokenManager(cache({ cacheName: 'mcs', username }))
-    this.pfb = new PlayfabTokenManager(cache({ cacheName: 'pfb', username }))
+    this.xbl = new XboxTokenManager(keyPair, cache({ cacheName: 'xbl', username }), this.fetch)
+    this.mba = new BedrockTokenManager(cache({ cacheName: 'bed', username }), this.fetch)
+    this.mca = new JavaTokenManager(cache({ cacheName: 'mca', username }), this.fetch)
+    this.mcs = new MinecraftServicesTokenManager(cache({ cacheName: 'mcs', username }), this.fetch)
+    this.pfb = new PlayfabTokenManager(cache({ cacheName: 'pfb', username }), this.fetch)
   }
 
   async getMsaToken () {
diff --git a/src/TokenManagers/LiveTokenManager.js b/src/TokenManagers/LiveTokenManager.js
index e1899d0..a035373 100644
--- a/src/TokenManagers/LiveTokenManager.js
+++ b/src/TokenManagers/LiveTokenManager.js
@@ -4,10 +4,11 @@ const { Endpoints } = require('../common/Constants')
 const { checkStatus } = require('../common/Util')
 
 class LiveTokenManager {
-  constructor (clientId, scopes, cache) {
+  constructor (clientId, scopes, cache, fetchFn = fetch) {
     this.clientId = clientId
     this.scopes = scopes
     this.cache = cache
+    this.fetch = fetchFn
   }
 
   async verifyTokens () {
@@ -46,7 +47,7 @@ class LiveTokenManager {
       credentials: 'include' // This cookie handler does not work on node-fetch ...
     }
 
-    const token = await fetch(Endpoints.live.tokenRequest, codeRequest).then(checkStatus)
+    const token = await this.fetch(Endpoints.live.tokenRequest, codeRequest).then(checkStatus)
     this.updateCache(token)
     return token
   }
@@ -91,7 +92,7 @@ class LiveTokenManager {
 
     const cookies = []
 
-    const res = await fetch(Endpoints.live.deviceCodeRequest, codeRequest)
+    const res = await this.fetch(Endpoints.live.deviceCodeRequest, codeRequest)
       .then(res => {
         if (res.status !== 200) {
           res.text().then(console.warn)
@@ -128,7 +129,7 @@ class LiveTokenManager {
           }).toString()
         }
 
-        const token = await fetch(Endpoints.live.tokenRequest + '?client_id=' + this.clientId, verifi)
+        const token = await this.fetch(Endpoints.live.tokenRequest + '?client_id=' + this.clientId, verifi)
           .then(res => res.json()).then(res => {
             if (res.error) {
               if (res.error === 'authorization_pending') {
diff --git a/src/TokenManagers/MinecraftBedrockServicesManager.js b/src/TokenManagers/MinecraftBedrockServicesManager.js
index 5381c9d..1377e90 100644
--- a/src/TokenManagers/MinecraftBedrockServicesManager.js
+++ b/src/TokenManagers/MinecraftBedrockServicesManager.js
@@ -4,8 +4,9 @@ const { Endpoints } = require('../common/Constants')
 const { checkStatus } = require('../common/Util')
 
 class MinecraftBedrockServicesTokenManager {
-  constructor (cache) {
+  constructor (cache, fetchFn = fetch) {
     this.cache = cache
+    this.fetch = fetchFn
   }
 
   async getCachedAccessToken () {
@@ -25,7 +26,7 @@ class MinecraftBedrockServicesTokenManager {
   }
 
   async getAccessToken (sessionTicket, options = {}) {
-    const response = await fetch(Endpoints.minecraftBedrock.servicesSessionStart, {
+    const response = await this.fetch(Endpoints.minecraftBedrock.servicesSessionStart, {
       method: 'post',
       headers: { 'Content-Type': 'application/json' },
       body: JSON.stringify({
diff --git a/src/TokenManagers/MinecraftBedrockTokenManager.js b/src/TokenManagers/MinecraftBedrockTokenManager.js
index 7a20a76..d41ddd2 100644
--- a/src/TokenManagers/MinecraftBedrockTokenManager.js
+++ b/src/TokenManagers/MinecraftBedrockTokenManager.js
@@ -4,8 +4,9 @@ const { Endpoints } = require('../common/Constants')
 const { checkStatusWithHelp } = require('../common/Util')
 
 class BedrockTokenManager {
-  constructor (cache) {
+  constructor (cache, fetchFn = fetch) {
     this.cache = cache
+    this.fetch = fetchFn
   }
 
   async getCachedAccessToken () {
@@ -51,7 +52,7 @@ class BedrockTokenManager {
       'User-Agent': 'MCPE/UWP',
       Authorization: `XBL3.0 x=${xsts.userHash};${xsts.XSTSToken}`
     }
-    const MineServicesResponse = await fetch(Endpoints.minecraftBedrock.authenticate, {
+    const MineServicesResponse = await this.fetch(Endpoints.minecraftBedrock.authenticate, {
       method: 'post',
       headers,
       body: JSON.stringify({ identityPublicKey: clientPublicKey })
diff --git a/src/TokenManagers/MinecraftJavaTokenManager.js b/src/TokenManagers/MinecraftJavaTokenManager.js
index c190833..743ac85 100644
--- a/src/TokenManagers/MinecraftJavaTokenManager.js
+++ b/src/TokenManagers/MinecraftJavaTokenManager.js
@@ -28,8 +28,9 @@ const reportReasons = {
 const toDER = pem => pem.split('\n').slice(1, -1).reduce((acc, cur) => Buffer.concat([acc, Buffer.from(cur, 'base64')]), Buffer.alloc(0))
 
 class MinecraftJavaTokenManager {
-  constructor (cache) {
+  constructor (cache, fetchFn = fetch) {
     this.cache = cache
+    this.fetch = fetchFn
   }
 
   async getCachedAccessToken () {
@@ -65,7 +66,7 @@ class MinecraftJavaTokenManager {
 
   async getAccessToken (xsts) {
     debug('[mc] authing to minecraft', xsts)
-    const MineServicesResponse = await fetch(Endpoints.minecraftJava.loginWithXbox, {
+    const MineServicesResponse = await this.fetch(Endpoints.minecraftJava.loginWithXbox, {
       method: 'post',
       ...fetchOptions,
       body: JSON.stringify({ identityToken: `XBL3.0 x=${xsts.userHash};${xsts.XSTSToken}` })
@@ -79,7 +80,7 @@ class MinecraftJavaTokenManager {
   async fetchProfile (accessToken) {
     debug(`[mc] fetching minecraft profile with ${accessToken.slice(0, 16)}`)
     const headers = { ...fetchOptions.headers, Authorization: `Bearer ${accessToken}` }
-    const profile = await fetch(Endpoints.minecraftJava.profile, { headers })
+    const profile = await this.fetch(Endpoints.minecraftJava.profile, { headers })
       .then(checkStatus)
     debug(`[mc] got profile response: ${profile}`)
     return profile
@@ -93,7 +94,7 @@ class MinecraftJavaTokenManager {
   async fetchEntitlements (accessToken) {
     debug(`[mc] fetching entitlements with ${accessToken.slice(0, 16)}`)
     const headers = { ...fetchOptions.headers, Authorization: `Bearer ${accessToken}` }
-    const entitlements = await fetch(Endpoints.minecraftJava.entitlements + `?requestId=${crypto.randomUUID()}`, { headers }).then(checkStatus)
+    const entitlements = await this.fetch(Endpoints.minecraftJava.entitlements + `?requestId=${crypto.randomUUID()}`, { headers }).then(checkStatus)
     debug(`[mc] got entitlement response: ${entitlements}`)
     return entitlements
   }
@@ -101,7 +102,7 @@ class MinecraftJavaTokenManager {
   async fetchCertificates (accessToken) {
     debug(`[mc] fetching key-pair with ${accessToken.slice(0, 16)}`)
     const headers = { ...fetchOptions.headers, Authorization: `Bearer ${accessToken}` }
-    const cert = await fetch(Endpoints.minecraftJava.certificates, { method: 'post', headers }).then(checkStatus)
+    const cert = await this.fetch(Endpoints.minecraftJava.certificates, { method: 'post', headers }).then(checkStatus)
     debug('[mc] got key-pair')
     const profileKeys = {
       publicPEM: cert.keyPair.publicKey,
@@ -176,7 +177,7 @@ class MinecraftJavaTokenManager {
     }
 
     debug('[mc] reporting player with payload', body)
-    const reportResponse = await fetch(Endpoints.minecraftJava.reportPlayer, { method: 'post', headers, body }).then(checkStatus)
+    const reportResponse = await this.fetch(Endpoints.minecraftJava.reportPlayer, { method: 'post', headers, body }).then(checkStatus)
     debug('[mc] server response for report', reportResponse)
     return true
   }
diff --git a/src/TokenManagers/PlayfabTokenManager.js b/src/TokenManagers/PlayfabTokenManager.js
index 1b64e9d..9947a1f 100644
--- a/src/TokenManagers/PlayfabTokenManager.js
+++ b/src/TokenManagers/PlayfabTokenManager.js
@@ -2,8 +2,9 @@ const debug = require('debug')('prismarine-auth')
 const { Endpoints } = require('../common/Constants')
 
 class PlayfabTokenManager {
-  constructor (cache) {
+  constructor (cache, fetchFn = fetch) {
     this.cache = cache
+    this.fetch = fetchFn
   }
 
   async setCachedAccessToken (data) {
@@ -21,7 +22,7 @@ class PlayfabTokenManager {
   }
 
   async getAccessToken (xsts) {
-    const response = await fetch(Endpoints.PlayfabLoginWithXbox, {
+    const response = await this.fetch(Endpoints.PlayfabLoginWithXbox, {
       method: 'post',
       headers: { 'Content-Type': 'application/json' },
       body: JSON.stringify({
diff --git a/src/TokenManagers/XboxTokenManager.js b/src/TokenManagers/XboxTokenManager.js
index 684d392..46d8669 100644
--- a/src/TokenManagers/XboxTokenManager.js
+++ b/src/TokenManagers/XboxTokenManager.js
@@ -18,10 +18,11 @@ const checkIfValid = (expires) => {
 
 // Manages Xbox Live tokens for xboxlive.com
 class XboxTokenManager {
-  constructor (ecKey, cache) {
+  constructor (ecKey, cache, fetchFn = fetch) {
     this.key = ecKey
     this.jwk = { ...ecKey.publicKey.export({ format: 'jwk' }), alg: 'ES256', use: 'sig' }
     this.cache = cache
+    this.fetch = fetchFn
 
     this.headers = { 'Cache-Control': 'no-store, must-revalidate, no-cache', 'x-xbl-contract-version': 1 }
   }
@@ -78,7 +79,7 @@ class XboxTokenManager {
     const signature = this.sign(Endpoints.xbox.userAuth, '', body).toString('base64')
     const headers = { ...this.headers, signature, 'Content-Type': 'application/json', accept: 'application/json', 'x-xbl-contract-version': '2' }
 
-    const ret = await fetch(Endpoints.xbox.userAuth, { method: 'post', headers, body }).then(checkStatus)
+    const ret = await this.fetch(Endpoints.xbox.userAuth, { method: 'post', headers, body }).then(checkStatus)
 
     await this.setCachedToken({ userToken: ret })
 
@@ -151,7 +152,7 @@ class XboxTokenManager {
 
     const headers = { Signature: signature }
 
-    const req = await fetch(Endpoints.xbox.sisuAuthorize, { method: 'post', headers, body })
+    const req = await this.fetch(Endpoints.xbox.sisuAuthorize, { method: 'post', headers, body })
     const ret = await req.json()
     if (!req.ok) this.checkTokenError(parseInt(req.headers.get('x-err')), ret)
 
@@ -190,7 +191,7 @@ class XboxTokenManager {
 
     const headers = { ...this.headers, Signature: signature }
 
-    const req = await fetch(Endpoints.xbox.xstsAuthorize, { method: 'post', headers, body })
+    const req = await this.fetch(Endpoints.xbox.xstsAuthorize, { method: 'post', headers, body })
     const ret = await req.json()
     if (!req.ok) this.checkTokenError(ret.XErr, ret)
 
@@ -229,7 +230,7 @@ class XboxTokenManager {
     const signature = this.sign(Endpoints.xbox.deviceAuth, '', body).toString('base64')
     const headers = { ...this.headers, Signature: signature }
 
-    const ret = await fetch(Endpoints.xbox.deviceAuth, { method: 'post', headers, body }).then(checkStatus)
+    const ret = await this.fetch(Endpoints.xbox.deviceAuth, { method: 'post', headers, body }).then(checkStatus)
 
     await this.setCachedToken({ deviceToken: ret })
 
@@ -255,7 +256,7 @@ class XboxTokenManager {
 
     const headers = { ...this.headers, Signature: signature }
 
-    const ret = await fetch(Endpoints.xbox.titleAuth, { method: 'post', headers, body }).then(checkStatus)
+    const ret = await this.fetch(Endpoints.xbox.titleAuth, { method: 'post', headers, body }).then(checkStatus)
 
     await this.setCachedToken({ titleToken: ret })